Readers can use a large eBook library b-ok.cc to download or read their favorite books online. The resource contains more than 4 million books and 74 million articles. You can choose a book using general, advanced, or full-text search. The advanced search divides all the materials into the categories of Year, Language, and Extension while the full-text search classifies books by matching a phrase, words, and exact matching. There is one more option of search by categories. Users can add books, view most popular, and recently added. A user gets necessary materials for free, the only thing he needs is to register. If you want to help the project, the last one receives donations via Amazon and BTC.